Folding mirror



FIG. 1 is a top front perspective view of my design in an open position;

FIG. 2 is a bottom back perspective view of my design;

FIG. 3 is a top view of my design;

FIG. 4 is a bottom view of my design;

FIG. 5 is a right side view of my design;

FIG. 6 is a left side view of my design;

FIG. 7 is a front view of my design; and,

FIG. 8 is a back view of my design.

The dashed lines are environmental structure forming no part of the claimed design. All other surface(s) or portion(s) of the embodiments of my design not shown in the figures or otherwise described in the specification form no part of the claimed design. 

The ornamental design for a folding mirror, as shown and described. 